Citazione Stile APA (7a Edizione)

Clarke, D. H., & Clarke, H. H. (1970). Research processes in physical education, recreation, and health. Prentice-Hall.

Citazione stile Chigago Style (17a edizione)

Clarke, David H., e Henry Harrison Clarke. Research Processes in Physical Education, Recreation, and Health. Englewood Cliffs, N. J: Prentice-Hall, 1970.

Citatione MLA (9a ed.)

Clarke, David H., e Henry Harrison Clarke. Research Processes in Physical Education, Recreation, and Health. Prentice-Hall, 1970.